空心苋化学成分的研究

Studies on Constituents of Alternanthera philoxeroides (Mart)Griseb

从苋科植物空心苋的全草中分离并鉴定了九个化合物：空心苋酸（Ｉ）、齐墩果酸（Ⅱ）、（２２Ｅ，２０Ｓ，２４Ｒ）－５α－８α－桥二氢－麦角甾烷－６，２２－二烯－３β－醇（Ⅲ）、α－菠甾醇（Ⅳ）、β－谷甾醇（Ⅴ）、胡萝卜甙（Ⅵ）、２＇，５－二羟基－６，７－亚甲二氢基异黄酮（Ⅶ）、２．５－丁二内酰胺（Ⅷ）和丁二酸（Ⅸ）。其中空心苋酸为新化合物，化合物Ⅲ、Ⅳ、Ⅶ、Ⅷ和Ⅸ以为从莲子草属植物中首次分得。

A new triterpenoid,philoxeroic acid(1) was isolated from Alternanthera philoxeroides(Mart)Griseb.and identified as 3β,21β-dihydroxy-olean-12-ene-28,29-dioic acid,in addition to eight known compounds:oleanolic acid(Ⅱ),(22E,20S,24R)-5α,8α-epidioxy-ergosta-6,22-diene-3β-ol(Ⅲ),α-spinasterol(Ⅳ),β-sitcaterol(Ⅴ),daucosterol(Ⅵ),2',5-dihydroxy-6,7-methylene dioxyisoflavone(Ⅶ),succinimide(Ⅷ),succinic acid(Ⅸ).The occurence of compounds Ⅲ,Ⅳ,Ⅶ,Ⅷ,Ⅸ in this genus is reported for the first time.